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Gene conversion from SLG to SRK resulting in self‐compatibility in Brassica rapa
Author(s) -
Fujimoto Ryo,
Sugimura Tetsu,
Nishio Takeshi
Publication year - 2006
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/j.febslet.2005.12.028
Subject(s) - brassica rapa , gene , compatibility (geochemistry) , biology , genetics , cultivar , locus (genetics) , brassica , botany , materials science , composite material
Self‐compatible S‐54 homozygotic plants were found in progenies of an F 1 hybrid cultivar in Chinese cabbage. Pollination tests revealed that this self‐compatibility is controlled by the S locus and caused by the loss of the recognition function of the stigma. SRK , the gene for the recognition molecule in the stigma, was normally transcribed and translated in the self‐compatible plants. The 1034‐bp region in the receptor domain of SRK in the self‐compatible plants was 100% identical to SLG in S‐54 , while that in self‐incompatible S‐54 homozygotic plants was 95.1% identical. These results suggest that the self‐compatibility of the S‐54 homozygotes is due to amino‐acid changes caused by gene conversion from SLG to SRK .